How to evolve the Shadow Servant in Vampire Survivors

To evolve the Shadow Servant into Ophion (Ofon) in Vampire Survivors, you need to max out both the weapon and its corresponding passive item, and then open a treasure chest that drops at or after the 10-minute mark.Follow these exact steps for the evolution:Level up Shadow Servant: Get the weapon to its maximum level (Level 8).Obtain Skull O'Maniac: Get the passive item Skull O'Maniac and level it up to its absolute maximum. (Note: This is a requirement for evolution, unlike many standard passives that only require Level 1).Open a Treasure Chest: Defeat a boss and open a chest at or after the 10-minute mark to receive Ophion.Evolving this weapon into Ophion for the first time will instantly reward you with 50,000 gold.